Killer Instinct, Book 2 cold cases get hot in the unputdownable mystery series from the bestselling author of The Inheritance Games

*THE INTERNATIONAL BESTSELLING SERIES WITH OVER 3 MILLION COPIES SOLD!*

THE STORY CONTINUES WITH ALL-NEW NATURALS 5: DANGEROUS IMPULSES, COMING NOVEMBER 2026!

Cold cases get hot in this unputdownable mystery from Jennifer Lynn Barnes, no.1 New York Times bestselling author of The Inheritance Games series. Perfect for fans of A Good Girl's Guide to Murder.

Cassie Hobbes has a gift for profiling people. Her talent has landed her a spot in an elite FBI programme. After barely escaping a confrontation with an unbalanced killer obsessed with her mother's murder, Cassie hopes she and the rest of the team can stick to solving cold cases from a distance.

But when victims of a brutal new serial killer start turning up, the Naturals are pulled into an active case that strikes too close to home: the killer is a perfect copycat of one of their incarcerated fathers - a man he'd do anything to forget. Forced deeper into a murderer's psyche than ever before, will the Naturals be able to outsmart his brutal mind games before he twists them into his web for good?

Born smart. Born tough. Born FBI.

Catch every thrilling twist and turn of The Naturals series in:
· The Naturals
· Killer Instinct
· All In
· Bad Blood
· Dangerous Impulses
· Twelve (e-novella)

For more unputdownable stories from Jennifer Lynn Barnes, don't miss the Raised by Wolves trilogy (Raised by Wolves, Trial by Fire, Taken by Storm) and standalones Every Other Day and At First Sight.